Typewriter attachment



Oct. 22, 1935. vw. sMlTH' 2,018,504

TYPEWRITER ATTACHMENT Filed Oct. 25, 1933 Patented Oct. 22, 1935 UNITED STATES;

TYPEWBITER. ATTACHMENT William Smith, Winthrop, Mass. i

Application october z5, 1933, serial No. 695,137 s claims. (ci. 19T-,126)

The objectof the present invention is the provision of a typewriter attachment to facilitate the making of manifold copies of invoices and the like.

In the drawing which accompanies and forms a part of this speciiication- Figure 1 is an end view of a typewriter attachment embodying my invention;

Fig. 2 is a section taken on the line 2 2 of Fig. 3; v

Fig.'3 is a plan view;

Fig. 4 is a fragmentary side view on an enlarged scale. t In`the particular drawing selected for more fully disclosing the principle of my invention, lil represents a frame of any suitable construction which is removably attachable to the carriage of a typewriting machine, the side rails of which carriage are indicated in the present instance at A, A. vIn the particular form illustrated in the drawing the removably attachable frame comprises a telescopic front bar I2 substantially coextensive with the length of the carriage and a rearward extension II While the two portions of the frame are illusmade of lxed or non-adjustable length, thelength of the carriage in each instance being determined by the machine with which my attachment is to be used. In slidable engagement with the front bar are two end members i3, i3 each heldin adjusted position by the set screws I t, it.

The rearward extension aforesaid consists of a pair of contiguous rods I5, i6 in parallel relau tion to each other, each of said rods having an end portion I1 bent at right angles to itself to form an eye I8 through which the other .rod passes. The forward ends of the end portions Il aforesaid are secured to the front bar in any suitable manner, as for example, by means of the nuts I9, I9 threaded to said end portions and disposed on either side of the slidable members I3.

A paper guide consisting of a pair of fingers 20, 20 of any desired form is adjustably attached to the rearward extension by the set screws 2i, said fingers being in slidable engagement with the rods II.

Secured to the front bar i2, as by brazing or otherwise, is a socket ,22 adapted to receive a rearwardly-inclined telescopic paper support, the latter being held in said socket by the set screw 2l. In the present instance the paper support consists of ahollow polygonal rod 24 and a rod 25 of similar cross section slidable therein. In the drawing both rods are shown as square, although it will be obvious that they mightv be triangular or of any other suitable cross section. 5 As shown in Figs. 1 and 2 the upper end of one side of the hollow rod is. slitted to form the leafspring 26. Preferably the rearward side of the upper end is so slitted. A- nut 21 is brazed to said leaf-spring and a screw 28 is inthreaded engage- 10 ment with said/nut, said screw passing through the leaf-spring and having 'its end in engagement with the rod 25. By this means the fric'- tional engagement of the upper with the lower rod may be modified. It is to be understood of 15 course that any other suitable means may be employed for this purpose.

The upper end of the-.front side of the rod 25 isslitted to form the leaf-spring 29 and a cap 30, of any' suitable construction, is pivotally con- 2o nected to the rod 25, as indicated at 3i. The cap is provided with a leaf -spring 32 extending downwardly over the spring 29. By means of the screw 33 Vhaving threaded engagement 'with' the mitV dit brazed to said cap, the inner end of said 25 screw passing through the cap and engaging the rod 25, said cap may be rocked about its pivot to vary the pressure of the spring-32 on the spring .2%. e j It will thus be seen that the leaf spring or 30 spring nger 32 is normally in' engagement with their-ont side of the paper support 25, the leaf spring 29 being integral with said support.

A pressure arm 33' may with advantage be .employed to press the paper slightly against the 35 paper'support. The arm 33', if used, may conveniently bev pivoted to the bracket 34 projecting from the forward side of the cap 30. In the present instance the upper end of said arm 33 is bent at right angles to'itself and passes through `a 4o socket in said bracket, as indicated at 35.

The rearwardly-extending ends i3 of the front bar of the frame may conveniently be attached to the side rails A of the typewriter carriage by screws passing through the bifurcated ends of 45 the members I3 and having threaded engagement with said rails. I

The operation of my attachment is as follows:

liiwoices and the like are made up in strips. each betwisting of a large number of invoice blanks, 5o the several blanks being separated by scoring, perieiiating, or in any other suitable manner. Supei-imposed on each invoice original are blanks for v manifold copies, such las ledger copies, package slips, :mipping copies and the like. Between the 1 per against the platen, the upper end of the first lss blanks at the end of the strip of blanksare placed sheets of carbon paper, the ends of which project about an inch on either side of the'blanks.

A strip of blanks is indicated at Il in Fig. 2. The strip is threaded through .the guide 20, 20, under the platen Il of the typewriting machine and up over the front bar l2 of the frameinto position for typing the first invoice. As soon as the typing of the first invoice has been completed, the operator grasps the strip of blanks by the upper corners thereof and draws the same up over the paper support and into engagement with the clip formed by the springs 2s, I2. The operator then releases the spring which in all typewrlting machines holds the paper in frictional engagement with the platen and grasping the protruding ends t2, 42 (Fig. 3) of the carbon paper, draws the latter downwardly and under the platen, so that the same is in position for typing the second invoice and the copies thereof.

The spring aforesaid is then set to press the painvoice and the copies thereof are removed from the clips 29, 32 and severed from the strip of invoice blanks along the perforated or scored porl tions aforesaid. The second and following invoices and the carbon copies. thereof are then typed successively until the strip of invoice blanks has been used. the procedure above outlined being repeated in the case of each of said blanks. In

Fig. 4 I have indicated at I3 a portion of a strip oi?y invoice blanks and the interleaved carbon sheets in the position occupied after the first invoice has been typed and the same with the manifolds held between in the spring clip 20, 32. It will be noted that the upper edges Il of the carbon sheets terminate short of the spring clip so that when the pressure between the paper and the platen is released the carbon sheets can be drawn downwardly into co-operation with the second blank. The lower edges of the carbon sheets are indicated at l5.

aorasos course that various changes may be made in the particular apparatus disclosed without departing from the scope of the invention hereinafter 5f claimed. I claim:

1. A typewriter attachment comprising in oombination a frame removably attachable to the carriage of a typewriting machine, said frame comprising a telescopic front bar substantially cow extensive with the length of the carriage, a pair of contiguous rods in parallel relation to each other, each of said rods having its end portion bent at right angles to itself to form an eye, means attaching said end portions to the ends of said l5 bar, each said rod passing through the eye of the other. and a paper guide secured to the parallel portions of said rods. 4

2. A typewriter attachment comprising in combination a frame removably attachable to a type- 20 writing machine, a rearwardly-inclined paper support secured to said frame intermediate the v ends thereof. the upper end of said support being slitted to form a leaf spring, a cap pivotally connected to said upper end,l a leaf spring secured to 25 said cap and extending downwardly over' the leaf spring ilrst mentioned, `and means for rocking said cap about its pivot to vary the degree of contact between said leaf springs.

3. A typewriter attachment comprising incom- 3o bination a telescopic frame adjustableto be substantially co-extensiv'e with the length of the carriage of 4a typewriter machine, said frame being composed of extensible front and rear elements disposed in substantially parallel relation. means 35 the ends thereof, and a rearwardly inclined paper 4 support removably secured in said socket. y 

